Self-clearing segment for lathes.



J. P. RENEKER.

SELF CLEARING SEGMENT FOB LATHES.

APPLICATION FILED JULY 13, 1809.

Patentqd July 12,1910.

3 SHEETS-SHEET l.

4 4 mmvroe WITNESSES NJ. Mam/L,

sy-mw ATTORNEYS J. P. RENEKER.

SELF CLEARING SEGMENT FOR LATHES.

APPLICATION EILED JULY 13, 1909.

Patented July 12, 1910.

3 SHEET8-8HEET 2.

WITNESSES INVENTOR AK Jill/1m; 7/ lzcvze/ren ATTORNE Y8 J. P. RENBKER.

SELF CLEARING SEGMENT FOR LATHBS.

APPLIGAT ION FILED JULY13,1909.

Patented July 12-, 1910.

WITNESSES Jul/185 17 2024 P/rc/ Q ax/m1 ATTORNEYS entree PATENT oFFioE,

JAMES FILLING BENEKER, OF LOGANSPORT, INDIANA SELF-CLEARING- SEGMENT FOR LATHES.

Specification of Letters Patent.

Patented July 124', 1910.

Application tiled July 13, 1909. Serial No. 507.359.

To all whom it may concern:

ie it known that l, JAMES Punitive BEN- iritnu. a citizen of the United States, and a resident t liogansport, in the county of (lass and State of lndiana, have invented a new and Improved Self-Clearing Segment for Lathes, of which the following is a full, clear. and exact description.

My invention r lates to lathes for heavy worl and more particularly to centerdriveu car v-sheel ladies of the Pond type and in which a car-axle is temporarily secured within the axial center of a worm wheel for the purpose of supplying power to the axle in order to cause the rotation of the car wheels and axle relatively to the cutting tool.

More epecifically stated. my invention comprehemls a worm wheel provided centrally with an aperture having generally the form of a slot for receiving the car axle, and further provided with a sector normally closing the slot, but capable of being moved out of the same in order to permit the ingress and egress of the axle.

My invention further relates: to means controllable by the automatic movements of the car axle when moved into and out of the. slotted worm wheel for operating the sector.

My invention still further relates to various safety ap 'iliancesj used in connection with the parts justmentioned for the purpose of providing against accident to the ma hinery or to bystanders.

teference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a front elevation of the lathe showing my improved worm wheel and sector for turning the car axle; Fig is a rear elevation of the sector and parts immediately associated with it. this view showing the butter and latch mechanism for locking and unlocking the sector relatively to the worm wheel: Fig. 3 is a detail showing partly in section and partly in elevation the movable sector. and also showing the butter and latch mechanism carried by it for securing it temporarily in po ition relatively to the worm wheel: Fig. l is a fragmentary view partly in section and partly in elevation. showing the sector as occu 'iying its normal position upon the worm wheel, and also showing the various movable parts as they appear when the car axle is about to be passed out of the slot of the worm wheel; Fig. 5 is a fragmentary front elevation showing the sector mounted upon the worm wheel and occupying its normal position relatively to the same: and I ig. 6 is a view partly in section and partly in side elevation, showing the various movable parts as they appear when the axle is aboutto be passed into the sloitcd worm wheel.

A housing 6 is provided with an extension 7 and is disposed intermediate :1 pair of supporting bases 5; Resting upon the latter are slides 9 and upon opposite sides of these slides are revoluble supporting disks 10. Mounted upon this revoluble support ing disk are mo'able blocks '11- provided with means for connecting them directly to car wheels 1'2. 7

At 13 is shown a car axle supporting the tar wheels 12. The disks are provided with slots 10" which are adapted to receive the axle 13.

At 14 are centering devices controllable by hand wheels 15 and provided with center bus 16, the latter being adapted to engage directly the ends of the axle l3. 7

At 17 are hand levers which c0 act with the hand wheels 15 in adjusting the center butts it i At 18 is a worm wheel which is disposed within the housing (3 and is provided with a rim 19 and teeth 20. The worm wheel is further provided with a. large slot 21 extending radially inward from the outer circumference of the wheel to a point a little beyond the center thereof, as will be under stood from Fig. 4. A sector 22, having curvature corresponding to that of the rim 19 is provided with teeth 23 ofathc same size as the teeth and spaced similarly thereto. Mounted upon opposite sides of the sector 22 are arms 24. '25, integral .with the sector, and extending through these arms are screw bolts 26 by aid whereof the sector is Suspended and adapted to swing, as may be seen by'cont-rasting Figs. 4 and G. The sect0r'22 is provided with two openings 27, 2S and within the latter are two levers 29. 30 mounted pivotally in position by aid of pivot pins 31, These pivot pins are provided with slotted heads 33, 34-, by aid whereof they are removable at will. A buffer plate 35 is provided with two cylindrical holes 36 and extending into the latter are two spiral springs 37. These springs en gage two rocking plates 38 which are mounted in apertures 39 upon the sector. The sector (see Fig. 2) is provided at its upper end with an edge 40 which is inclined relatively to the general length of the scctpr, and in this respect is therefore parallel with the eneral osition of the sector teeth 23. In e midd e of the edge 40 is a notch The sector at its bottom is provided with another inclined edge 42, and disposed cen trally in relation to the latter is a lug 43 projectingdownwardly. The sector is moreover provided with shoulders 44, 45, and adjacent to the support 45 is another lug 46 which extends into a slot 47 in the rim of the worm wheel, as will be understood from Fig. 4. Adjacent to the slot 47 are shoulders 46 against which the shoulders 45 may lodge will be understood from Fig. 4. Disposed upon 0 site sides of the slot 41 are lugs 48 wine are adapted to lodge against shoulders 49 carried by the rim of the worm wheel. At 50, 51 upon the levers 29, 30 (carried by the sector 22) are latch hooks which are adapted to engage with.

other latch books 52, 53 carried b the rim;

The buffer plate35 is providec centrally with an aperture 54, and fitting into this aperture is a hall 55. By this arrangement the lever '29 can have a rocking movenn-nt relatively to the lever 80 when a pressure is applied to the butter plate The butler plate 35 is provided with a bcvcl surfacehli which becomes approximately parallel with the inner surface of the sector .22 whcncvcr the bull'cr plate is pressed toward the lath-r. A toggle arm 57 is mounted rigidly upon the sector 2:! and is provided with a lug 58. as will he uuderstmxl from Fig. 4. The toggle arm is also provided with an upwardly projocting pol'limi .39. .\t (30 is a guii e rod which is connected with the portion 59 of the toggle arm by aid of a pin til. guide cylinder (32 encircles the guide rod 0 and is mounted upon a pivot pin 63 carried by the worm whccl. Encirclmg the guide ryl' inder t is a spiral spring (54 and engaging the latter is a collar mounted upon and adjustable relatively to the guide rod 60 for the purpose of controlling the tension of the spring 64. The toggle arm 5? taken in connection with the guide rod (30 and parts immediately associated with the lattcr forms a toggle joint so arranged as to have two normal positions, one corresponding to the sector 21'. as closed Fig. 4) and the other corresponding to this sector as open. as indiculcd in Fig. ii. That is in say. when the sector 22 is closed as indicated in Fig. 4,

lhe spring pressure against the upper cud of the toggle arm 57 tends to kccp tlu- HtllUl closed lightly; whcrcns, if the logglc arm II? he swung downwan'dlv so that the spring pressure is directed as indicatcd in Fig. (i,

the sector is by this spring pressure held Wl(l8 open. It seems, therefore, that if an imaginary line be struck thr'ough the pivpts G3 and 26 when the pivot 61 is at the upper side of this line. the pressure of the s ring 64 tends to keep the sector 22. closed; w e as, if the pivot 61 be below the line in u 3- tion, the tendency of the spring 64 is to cop the sector 22 open. It follows, therefore, thatthe osition of the sector 22, whether open or c osed, is controllable by movements of the axle 13 for the reason that this axle, in passing into and out of the slot '21, as indicated in Fig. l). is adapted to engage the log 58 and therebv shift the toggle mechanism just described. so as to move the pivot pin til above or below the imaginary line ctween the pivots G3 'and :36. The various lugs, shoulders, slots and the like, at the top and bottom of the sector 22, are mainly for the purpose of holding the sector rigidly forms virtually a part of the rim of the.

worm wheel. In order to make the engagement of the sector more secure, the various lugs and shoulders at the top and bottom of this sector grip tightly against the mating lugs and shoulders of the worm wheel, the net result being that the sector 22 can move neither out nor in. up nor down, nor can it move sidewise.

The operation of my device is as follows: Suppose that it be desired to turn in the lathe a pair of car wheels mounted in the usual manner upon an axle as indicated in Fig. l. The sector 22 is now open, having been left so since the last turning operation upon the lathe. The lathe is so turned as to 'bring the axle l3 and the slots 10 all into horizontal position. The axle 13 is now passed into the slot 21, as indicated by the arrow in Fig. 6. The axle en ages the lug 5S and turns not .only the togg e arm 57, but the sector 22, upon the pivot 26 as a center. In doing this the spring (34 is compressed a. little until the pivot 61 passes upwardly across the. imaginary line oining the pivot 63 with the pivot 26, and after this line is passed, the pressure of the spring 64 causes the pivot 61 to rise and the sector 22 to close. The closing of the sector causes the latch hooks 50, 51 to strike againstthe latch hooks 52, 53, and thus causes the arms 29 and 30 to swing slightly upon the pivot pins-33, 34. The engagement between the latch hooks being complete, the pressure of the sprin 37 by forcing the bul 'er plate 35 inward now piisit-d along the slot 21 to the geomet r'i al renter of the worm wheel. is locked -1 elatively to the. same in the usual manner Q by aid of tent orary ehoeks employed for j the purpose. ower being now eonnnunit-ated to the worm in turn transferred to the ear axle and the wheels are thereby turned. The turning operation being romplcted and it heing desired to remove the axle carrying the wheel. the axle is moved horiaontally as indicated in Fig. 4. Striking agaimt the hatter plate. it compresses the pring I}? and heads the arms lit. 30 slightly mt. ardthat is. away from the center of the worm wheel. in doing this. the ltlltl! hoolts are disengaged and the pre.-:- sure of the moving axle now eanses the seetor .32 to swing outwardly. the pivot tit is thus lowered until it passes below the iniaginar v line joining the pivots 2t (33. and after this point is passed as ahove deserihed. the |)it$ .tll(' ot' the spring til causes the wetor 25 to swing hodil outward. the shaft heing thus ell'eetivel) cleared of its (-onneetion with the worm wheel. Suppose, now. that owing to any eanse. the. power should he aeridentallv applied to the worm wheel,

50 as to start the same prematurely into at tion while theseetor 2; is swung outwardly. in thin event the teeth 13 (see Fig. 4) strike against the projeetion i of the housing whit-h is innoediately over the set-tor when the latter oet-upies its normal position. i Guided h v the pro ieetion T the Sector 32 is foreed hat-k nearly into its normal position, and when this orrnrs the pressure of that spring 4 upon the toggle arm 57 ran es the I set-tor to snap into its proper position. and 2 causes the latch hoolts 5t), 51 to grip rel-i ativgly to the latch hooks 5-2. 53. ()wtng to f the gripping :n-tion of these latch hooks they 5 may he eon idered as dogs for holding the i set-tor in a predetermined po.-:ition.

Having thu deserihed my invention, l. iittlltt a new and desire to st 'tllt h lietter latent:

l. wlt-t-h'aring egm nt for latln-s. (Ulllprising a wheel provided with an opening; i'orreeeiving an ohiet-t to he turned. a sector 1 for (losing said opening. and means (:ontrollahle hr the relative movement of said ohiw-t to he turned as said ohjet-t is pa aed i into and out ol its Plhlllfill in said \Yht'vl for the pnrpow of swinging aid .-et-t r into and out of aid opening.

'1. Th romhination of a Wiltt'l provided 1 with a dot. a t'tltll" niovahle relatively tof :aid wheel and adapted to ("lose one end of rnitl iol. late]: in whanism for loelting said i nQlIlUl' n po ition relativehv to said \\'ilt't:l,i

: olnhle member.

and lllt'tlllh' eontrollahle hv movements of an uhjutl to he turned. as said oh eet h passed out of said slot from its turning ponition therein. for artuating aid latch lueehanisul Slllll set-tor from said wheel.

I The eomhinati n of a wheel provided with an o ening for reeeiving an object to he turned. a nttltll for rlosinfl said Opening! a stationary olrdt'netiolt dispowd adjaeent,

' to .-aid wheel for fort-ing said eetor toward aid o ening win-n said \vhvel is turned, and nit-am for turning -aid wheel.

-l."l he romhination ot'. a wheel provided with an opening for reeeiving an ohjet-t to so lit turned. a .-.t('lt)l' mounted upon said wheel and adapted to wing so as to close a portion of .-aid opening. an ohstruetion dispo ed adjarent to aaid wheel and adapted rotated. o as to move aid seetor toward -aid opening. and meehanimn connected with .-aid Stt'lfll and eontrollahle in part h the rotation of aid wheel for moving said sector (lll't't'll into said opening. 5. devit'e of the rharaeter destft'ihed, eonipri-ing a wheel provided with an open ing. a rt't'to earried h v said wheel and mmnhhrelatively to the an.e. and #pring nu-vhanimi "onnerted with said wheel and with aid N't'lhl' and eontrollahhh v 1nove ment of a ear axle within' aid opening for moving said wvtordireetlv intosaidopening. i. (l(\'l('t of the t'lmt'at'let destlihed, eotnprixing a revolnhle HNllllWl' provided with an opening. a set-tor mo ahle relatively to said nietnher for t mporarily elo ing said opening. means for preventing -aid net-tot from moving laterally in relation to said revolnhle meniht-r. and tneehani ni t'or holding said set-tor rigidly in a pretletermined po ition relatirelv to aid revoluhle nn-mher. -aid lllttlllllli-lll heing eontrolled h the movement of the ohjeet lo h turned as hull! ohiet-t is moved into and out oi position in ztid slot.

T. The eomhination ot a revoluhle meniher provided with an opening for rereiving an olijeqt to he turned. and further provided with a slot. a \e't-tor mounted upon aid no-anher and m vahle relatively thereto. id eetor heing provided with a portion for entering aid lot in order to prevent nndesirahle motion of said sretor relativelv to said revolnhle nnanher. and nnw-hanisni eontrollahle l. movements oi said ohiett to he turned. Iii said Hl)jl.l 1 [now-d into lllltl out of position in said slot. for raining .\llltl senior to move hodilv in relation to aid rev- The eomhination of a worm wheel prw \ith-d with a lot.a eetor for eloning oneend of said \\'ll('\l. toggle met-hanism tullllt't'lttl with said worm wheel and with aid set-tor for at'tuating aaid Stt'lfll' relatively to maid 15o a movable members disposed partially in the worm wheel, latch mechanism connected name to this specification in the presence of with said sectolr for 1locking tge same rigidly two subscribing witnesses. in sition re ative y to sai worm wheel, Y snici latch mechanism being provided with JAMES PILLIkG B' \Vitnesses THOMAS J. MCELHENY, MARY Aux-22m.

path of travel of said member to be turned. In testimony whereof I have signed my 

